Vise.



PATENTED NOV. 26, 1907. J. E. OSMER. VISE. APPLIUATION FILED JUNE 24, 1907.-

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PATENTED NOV. 26, 1907 J. E. OSMER VISE.

APPLIoATIoN FILED JUNE 24. 1907.

2 SHBETSQSHBBT Z production of a fluid-pressure-actuated vise tion, the motor structure comprises -a cylin- JOHN 1C. OSMER, OF CHICAGO, ILLINOIS.

VISE.

Specification of Letters Patent.

Patented Nov. 26, 1907.

Application filed June 24,1907. Serial No. 380,434.

To all whom it may concern:

Be it known that I, JOHN E. OsMnR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Vises, of which the followingr 1s a specification. i

One of the objects of this invention is the comprising a vise structure and a motor structure which are readily separable from each other for convenience of repair.

Another object of the invention is the provision of means for removing filings from the bearings of the mechanism.

The invention also relates to the other improvements in vises hereinafter set forth.

In the accompanying drawings, Figure 1 is a top plan view of a fluidpressure-actuated vise embodying the features of my invention. Fig. 2 is a view substantially in longitudinal vertical central section. Fig. 3 is a front end elevation of the vise structure. Figs. 4 and 5 are fragmental views showing the valve mechanism. Figs. 6, 7 and 8 are views in a series, showing the different Operative positions ofthe valve mechanism.

The vise structure in the present instance comprises a suppclirt l proyided with a base 2 by means of w 'ch the vlse structure is secured to a bench a or other suitable sup ort. At the upper end of the support 1 is the iixed vise jaw 3. The stem 4 of the movable jaw 5 is slidably mounted in an opening 6 in the support 1, and upon the bracket 7 projecting forwardly from and preferably cast integral with the support 1.

In the present embodiment of the invender 8 of suitable construction, said cylinder having lugs 9 for attachingthe cylinder to the bench a in the rear of the vise structure. The piston rod 10, in this instance, is tubular in construction and has attached to its inner end a piston 11 comprising two disks 12 and 13, the latter having a cyllndrical portion 14 forward end of the tubular iston rod 10 is closed by a plug 15. The piston 1.1 and the plug 15 may be secured in place by means of a tie rod 16, the forward end of which is screwed into an opening in the plug 15, said rod passing through registering openings in the disks 12 and 13 and receiving a` nut 17 upon its rear screw-tlu'eaded end. Suitable packing devices 18 and 19 are provided for a rod 22, a bolt 23 extending through said ears. Theforward end of therod22 is screwthreaded into an opening 24 in the forward end of the ste-m4.

The pressure fluid is admitted to the cylinder 8 by means to be'now described. A pressure chest 25 is located in any suitable place, as, for example, upon one side of the cylinder 8. The valve face 26 in said pressure chest has a port 27 therein communicating with the forward end of the cylinder 8, a port 28 connected with the rear end of the cylinder through a pipe 2S), and au exhaust port 30. A port 31 1n said valve face is connected with the port 27 through the passage 32. A slide valve 33 is mounted between guides 34 u )on the valve. face, and has a cavity 35 therein ada )ted to connect the ports 28 and 31, and another cavity 36 adapted to connect the ports 28 and 30. An opening 37 extends through the slide valve 33 in position to register with the port 27 when the cavity 35 connects the ports 28 and 31.

The slide valve 33 is reciprocated by any suitable means. I have herein shown a vertical shaft 38 having'fixed to its lower end a face plate 39, said face late carrying a crank pin 40 which lies wit iin a transverse groove 41 formed in the slide valve. A crank arm 42 is fixed to the upper end of the vertical shaft 38 and is connected with an operating rod 43 by means of a link 44. The operating rod 43 is herein shown as slidably mounted in guides 45 fixed to the su port 1. Preferably means is provided for re easably locking the slide valve 33 in its three operative positions, such as a sector 46 having locking notches 47 therein adapted to receive the peint of a springressed locking lunver not shown carrie b'r the crank arm 42.

Pressure fluid is admitted to the pressure chest 25 through a su ply pipe. 48. In the present embodiment t le pressure fluid, such as compressed air, is utilized for blowing filings and the like from the upper side of the stem 4 and the piston rod 10 so that said filings shall not be carried into the bearings of said stein and piston rod during the operation of the vise. I have herein shownv a pipe 49 connected with the exhaust port 30, one branch 50 of said pipe extending to a point above and close to the piston rod 10 and another branch 51 extending to a point above and near the stern 4. Y

When the vise is closed the slide valve 33 is in the position shown in Fig. 8, the space in the cylinder rearwardly of the piston 11 being connected with the atmosphere through the pipe 29, port 28, cavity 36, port 30, and pipe 49. The space in the cylinder in front 'of the piston communicates with the source of pressure fluid through the port 27. Pressure is now continually being exerted to hold the vise closed. When the vise is to be opened the slide valve 33 is moved into the position shown in Fig. 6, wherein the ports 28 and 31 are connected through the cavity 35, and the port/37 registers with the port 27. The pressure Huid theretofore used for closing the vise now passes from the space in front of the'piston 11 through the port 27, assage 32, port 31, cavity 35, port 28, and pipe 29 to the rear of the piston. The area of the rear side of the piston being greater than the effective area of the forward side thereof, the equalizing of the pressures in both ends of the cylinder causes the piston to be moved to the left (Fig. 2), thus opening the vise. At the same time high-pressure fluid is admitted to the cylinder' through the ports 37 and 27.

If it be desired to stop the travel 0I the vise jaw 5 at a point between the extremities of its movement, the slide 'valve 33 may be placed in an intermediate position, as indicated in Fig. 7, in which position all of the ports leading to the cylinder are blanked.

The exhaust pressure fluid is discharged through the pipes 50 and l onto the piston rod 10 and the stem 4, clearing said piston rod and stein of filings or other material that might injure the bearings for said piston rod and stem.

When desirable, the vise structure and the motor structure may be separated from each other for cleaning or repairing.

It is obvious that various dhanges may be made in the embodiment herein illustrated saisie without departing from the spirit and scope of the invention, wherefore I desire to have it understood that I do not limit myself to the precise details herein set forth.

i claim as my invention:

l. In a vise, in combination, a kcomplete motor structure comprising a cylinder, a piston, and a piston rod attached to said piston; a supporting member formed `separate from and located forwardly of said motor structure; a stationary jaw on said supporting member 3 and a movable aw having a stem slidably mounted in said supporting member, said stem and said piston rod being separably connected together.

2. In a vise, in combination, a vise structure' comprising a support; a stationary jaw on said support; a movable having a stem slidably mounted in said support, said stem being of hollow construction; a cylinder; a piston in said cylinder; a piston rod attached to said piston; a rod extending through the stem of said movable vise jaw and attached to the forward end of said stem; a connection between the rear end of said rod and the forward end of said piston rod; and a valve mechanism for said cylinder.

3. ln a fluid-pressure-actuated v ise, in combination, a vise structure comprising a movable vise jaw having a sl'idably mounted stem; a motor structure comprising a piston rod; and means for discharging the exhaust pressure fhiid upon. said stem and Said piston rod.

4. In a iuidpressureactuated vise, in combination, a cylinder; a piston in said cylinder; a piston rod attached to said pis.a ton; a movable vise jaw attached to said piston rod; a pressure chest connected with a source of pressure Huid supply and with said cylinder; a valve mechanism in said pressure chest and an exhaust pipe leading from said pressure chest to a point near said piston rod and to a point near the stem of said vise jaw and adapted to discharge the exhaust pressure iuid upon said rod and said stem.

' JOHN E. OSMER. Witnesses:

L. L. MILLER., GEORGE L. CHiNDAUL. 

